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[wxWidgets.git] / src / msw / popupwin.cpp
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: msw/popupwin.cpp
3 // Purpose: implements wxPopupWindow for MSW
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 08.05.02
7 // RCS-ID: $Id$
8 // Copyright: (c) 2002 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
9 // License: wxWindows license
10 ///////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 #ifdef __GNUG__
21 #pragma implementation "popup.h"
22 #endif
23
24 // For compilers that support precompilation, includes "wx.h".
25 #include "wx/wxprec.h"
26
27 #ifdef __BORLANDC__
28 #pragma hdrstop
29 #endif
30
31 #ifndef WX_PRECOMP
32 #endif //WX_PRECOMP
33
34 #include "wx/popupwin.h"
35
36 #include "wx/msw/private.h" // for GetDesktopWindow()
37
38 IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow, wxWindow)
39
40 // ============================================================================
41 // implementation
42 // ============================================================================
43
44 bool wxPopupWindow::Create(wxWindow *parent, int flags)
45 {
46 return wxPopupWindowBase::Create(parent) &&
47 wxWindow::Create(parent, -1,
48 wxDefaultPosition, wxDefaultSize,
49 flags | wxPOPUP_WINDOW);
50 }
51
52 void wxPopupWindow::DoGetPosition(int *x, int *y) const
53 {
54 // the position of a "top level" window such as this should be in
55 // screen coordinates, not in the client ones which MSW gives us
56 // (because we are a child window)
57 wxPopupWindowBase::DoGetPosition(x, y);
58
59 GetParent()->ClientToScreen(x, y);
60 }
61
62 WXDWORD wxPopupWindow::MSWGetStyle(long flags, WXDWORD *exstyle) const
63 {
64 // we only honour the border flags, the others don't make sense for us
65 WXDWORD style = wxWindow::MSWGetStyle(flags & wxBORDER_MASK, exstyle);
66
67 if ( exstyle )
68 {
69 // a popup window floats on top of everything
70 *exstyle |= WS_EX_TOPMOST | WS_EX_TOOLWINDOW;
71 }
72
73 return style;
74 }
75
76 WXHWND wxPopupWindow::MSWGetParent() const
77 {
78 // we must be a child of the desktop to be able to extend beyond the parent
79 // window client area (like the comboboxes drop downs do)
80 //
81 // NB: alternative implementation would be to use WS_POPUP instead of
82 // WS_CHILD but then showing a popup would deactivate the parent which
83 // is ugly and working around this, although possible, is even more
84 // ugly
85 return (WXHWND)::GetDesktopWindow();
86 }
87